Ok,finally we get battery from CALB (formerly Sky Energy),it is better impedance,but too difference between cells,CALB is similar to GBS impedance and better than Thundersky,I think all of them come from the same technology and dosage.

We want know your battery, not battery from other supplier.
Please, do you have more information or not.
C-rate charge and discharge? Max/continue?
How many cycles 80%DOD at 3c discharge and 1c charge? Do you have this test....or do you want we pay for your batteries, and we make the test....don't jock